Control Data 449 Special Miniature Computer from 1967?

rice43 rice43 at
Fri Oct 16 04:23:01 CDT 2020

------ Original Message ------
From: "Steve Malikoff via cctalk" <cctalk at>
To: cctalk at
Sent: Friday, 16 Oct, 2020 At 08:02
Subject: Control Data 449 Special Miniature Computer from 1967?
I was idly browsing early editions of Computer World journal on Google 
newspapers and found an announcement
and picture of the '449', an experimental aerospace computer built by 
Control Data in 1967 and touted as
"the world's smallest computer" at 4" x 4" x 9", of which the logic part 
is a 4" cube and the rest is the battery.
It's on page 3 of Computer World Sep 20 1967: 
It seems to me it may have been an analogous machine to the Apollo AGS 
perhaps and would like to know a bit more
about it, but I've only been able to find a brief mention of the '449-2 
Special Miniature Computer' and
that's it. hasn't turned up anything. I'm just curious about 
the tech used, no doubt it used DIPs
or flatpack micrologic and a tiny core plane?
The only source i can see shows that prototypes were shipped to the US 
Military. I imagine, from the pretty limited instruction set shown on 
the article you linked, that  it was primarily used for ballistics 
calculations for, say, missiles or mortars. Being what i assume was a 
military contract, i don't imagine many of these prototypes were made, 
and details would be classified.
With the technology of the time, I can't imagine it had much memory even 
compared to other small machines like the PDP-8 and AGC. The limited 
instruction set would help keep the physical size down, but also limit 
it's usefulness in general applications.
I'd suspect it was TTL based, like other (very) late 60's machines, with 
a very limited amount of core memory.

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